Title: Oxidation decomposition of chromite ore in molten potassium hydroxide
Authors: Sun, Zhi ×
Zheng, Shi-li
Xu, Hong-bin
Zhang, Yi #
Issue Date: Jul-2007
Publisher: Elsevier science bv
Series Title: International journal of mineral processing vol:83 issue:1-2 pages:60-67
Abstract: Oxidation decomposition of a Vietnamese chromite ore in molten KOH under atmospheric condition was investigated. The decomposition and the further leaching processes were briefly described, together with a discussion on the related thermodynamics and kinetics. During decomposition, the silica in the mineral was first destroyed, followed by the chromite spinel and the activation energy of this process is 35.53 kJ/mol. In addition, the effects of reaction temperature, oxygen partial pressure, weight ratio of KOH-to-chromite ore, chromite particle size on chromium extraction, and behaviors of chromium, aluminum, and silicon were examined. (c) 2007 Elsevier B.V All rights reserved.
ISSN: 0301-7516
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Chemical and Extractive Metallurgy Section (-)
× corresponding author
# (joint) last author

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